基于瞬时无功理论的无功电流检测方法研究

Research on Reactive Current Detection Methods based on Instantaneous Reactive Power Theory

基于瞬时无功功率理论,对用于无功功率补偿设备的无功电流检测方法进行了研究。通过分析目前常用的各种电力系统无功电流检测方法的优劣,按照不同补偿要求,采用了ip-iq法和Hilbert法两种具体的检测方法。运用Matlab对两种方法的仿真模型进行了稳态和动态性能分析,最终在工控机硬件平台下进行了验证。结果表明,这两种算法均能很好地检测出三相系统中的无功电流,从而达到无功补偿的目的。

The reactive current detection methods in reactive power compensation device based on instantaneous reactive power theory are researched.By analyzing the quality of various kinds of harmonious and reactive current detection methods in power system,and according to different compensation requirements,two reactive current detection methods,ip-iq method and Hilbert method are adopted.Then these two models on their comprehensive performance of both stable state and dynamic state are simulated.Finally,the verification under an IPC hardware platform is given.The result shows that these two methods can well inspected the three phase reactive current, which completes the system compensation.